黄鳝卵巢发育的研究

STUDY ON THE OVARIAN DEVELOPMENT IN MONOPTERUS ALBUS

作者对252尾黄鳝卵巢标本进行观察记录,运用常规染色法、组织化学法和扫描电镜研究了黄鳝的卵子发生、卵巢发育和卵巢周年变化规律。讨论了黄鳝的卵黄发生、卵巢发育分期和产卵类型等问题。本研究为黄鳝人工繁殖提供有关科学依据。

An anatomical observation was made on the morphological characteristics of the ovary of Monopterus albus. Oogenesis, ovarian development and annual cycle of ovary were investigated using paraffin-section method, histochemical method and scanning electron microscopy. Oogenesis in M. albus can be divided into five stages, i.e. the chromation-nucleolus stage, perinucleolns stage (including early and late phases), primary yolk stage (including early and late phases), secondary and tertiary yolk stage (including early, middle and late phases), stage and mature stage. Ovarian development is divided into four stages: previtellogenesis ovary, vitellogenesis ovary (including early, middle and late phases), mature ovary and spent ovary.The ovarian development is partially synchron zed. Fish with this type of development usually spawn once a year. The vitellogenesis, the stages of ovarian development and the spawning type in M. albus are discussed.